Roentgenoscope.



T. B. MYCCLINTOCK.

ROENTGENOSCOPE.

APPLICATION FILED JAN. 25, I916.

Patented Nov. 19, 1918.,

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APPLICATION FILED 1AH.25.1916.

1 ,285,23 Patented N0v.'19, 191 8."

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Patented Nov. 19, 1918.

OPE.

EFJTGENO HON FILED JAN-25.19%

T. B. McCUNTOCK rnnonoan B. MOCLINTOCK, or CHICAGO, ILLINOIS.

, ROENTG-ENOSCOPE.

fipeoification of Letters Patent.

Application filed January 25, 1916. Serial No. 74,099.

' 1 b all whom it may concern Be it known that I, THEODORE BY MCCLIX- TOOK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Roentgend' scopes, of which the following is a specification.

My invention relates to improvements in roentgenoscopes and more particularly toapparatus for facilitating fluoroscopic examination of the human body.

One of the objects of myinvention is to provide an apparatus susceptible of manipulation and control from a'single point, so that the operatorworking, as usually he must, in a dark'roommay readily adjust the apparatus in all needed particulars, working with one hand only at the control point to effect allnecessary adjustment while himself standing in proper position for observation.-

A further object of my invention is to provide apparatus which is eiiicient, simple, rugged and not liable to get out oforder.

Another object of my invention is to provide an apparatus particularly adapted and arranged for orthodiagraphic work, such as accurately determining the outline of the heart or other organ.

Other objects of my invention are to improve in general and in detail the construction and arrangement of apparatus of the character described and further objects will be apparent to those skilled in the art from the following description taken in conjunction with the accompanying drawings in whi ch Figure l is a side elevation of a roentgenoscope embodying my invention;

Fig. 2 is a rear elevation thereof with parts broken away;

Fig. 3 is a horizontal section on line 3.3 of Fig. 1.

Fig. at is a detail of a finder for orthodiagraphic work.

. Fig. 5 is an elevation in detail of a fluoroscopic screen mounting.

Fig. 6 is a detailed section on line 6-6 of Fig. 5.

phragm construction Fig. 8 is a horizontal sectional view thereof on line 88 of Fig. 7.

Fig. 9 is a detail of the control arm construction; I Fig. 10 is a detail of the spark gap aduster typlfying a suitable tube-regulator.

The main frame 15 provides a platform 16 mounted on rollers.17 and carrying an upright back frame 18, composed of suitably braced side pieces 18 connected at the top by cross bar 19. This back'frame, on whichthe movable parts of the apparatus are mounted, is appropriately constructed as to size and strength for stability to carry all of the operating apparatus and is of height and width somewhat greater than the reasonable height and breadth of a person, so that the patient may comfortably stand (or be seated) on the platform in front of theback frame.

A second frame or slide frame 20, narrower than the main frame, is mounted to slide'transversely on the latter. Such sec- Patented N Or. 119, 1918.

0nd frame may be an upright open panel,

engage a guide rail 23 on themain frame platform, and providing near its top horizontal guide rollers 24 that engage a rod 25 mounted at the top of the main frame and surrounded, at the supported ends of the. said rod, with bumper springs 26.-

The second frame carries, for vertical container 28 for the X-ray tube itself is sturdy'and rugged, it may be used as the principal member of the carriage. The tube casing orcontainer 28 is a receptacle of suitable size and shape, made of material impervious to X-rays, and mountmembers of the second frame 20. Two cords 32 s'uitablyattached to the sides of the tubecasing run over :pulleys'33 carried by the head frame 21 and down to the counteradjustment, the tube carriage 27, and as the ed, adjacent its upper and lower ends. on

ment.

mounted on second the will remain in'adju'stedposition owing the counterhalancing effect or the iveightsfi v J 1 head 21, its carrying cords 38 running over pulley and s0 and doivn to counterweights that suitably guided tor vertical movement respect to, or for connection with the counter-Weights oi the tube contain-er. Alinement or the arrows on the 'counter-Wei 'ht and the counter Weight ll indicate when the'tuloe casing 27 and the screen 3'4" are in proper positions for most eiiicient operation. Specifically I prefer tl counter-Weights ll he slidahlv mounted on the counter-Weight 3e h providing in the countereight t d3 andoii the counter-Weight ll'the rollers l i engagirp n said slots, the two counteri Weight" on each side of the machine being together they may he moved in unison up or down 771 nout chang' .2: their relative position, huteither may he adjus"ed, individually when the screw to has been released. Normally the fluoroscopic screen 3'? may pendant as shown in dotted lines in i, so that the screen may he moved 'oward from the patients body or latra ly by the patient under the operators directions, or by the operator, and may in terrors as little as possible with the comfort of the patient or the actions of the operator. l or certain purposes, as in orthodiagrapliic or is important however. a that locatio of the fluoroscopic screen he d finitely filed, and, therefore, l provide on the main frame vertical guide rods l lll, removahly positioned as by engagement at their lower ends in the soclrets lei of the base, 16 to be locked hv set screw no, and by ment of the tubular up er end or each f ui s telescopically on a stud 1%?) carried by a su able bracket l lprojecting from the he.

frame 18L The screen, as best shown in Figs. 0 and 5 is provided with guides to engage the rods is) such guides comps-i mg angles l lo and clamp screws which theydmay he secured to the Vertical rods H0 in any desired position or adjust- Metal plates secured to the screen frame may serve as additional guides to rest against the rods 0 and maintain the vertical position of the screen, as Well as acting as bases for the handles l7, and pro te tion needless e ocsure of the operator's lands in ad ust 1g the screen. in order th =uoroscopic screen for the purpose of Q permanent record spring clamps l8 *ovided at the four corners of the screen-to clip a suitable paper sheet against the exterior surface of the screen.

or protection or the operator and the pa- "*om needless exposure to the X-rays,

2 ar face with a metallic plate 50, of steel o her impervious material, except for an a 5i which is preferably overlain by a ray lter plate or" almninum. it its front the tube casing is provided With a diaadjustahle as to area of opening,

o regulate to a nicety the desired extent of exposure. is specifically shown the tube casin has orifice 53, covered on the in side 0; the casing with a leather shield and overlain euteriorly by the diaphragm diaphragm structure shown, contained Within the disk shaped casing that l being mounted respectively to slide in appro-priately disposed guide Ways 59, being actuated to effect their opening and closing movements by two annular cam plates SG GO, disposed between the opposite sides of the guide structure and the contiguous casing walls, guided in circular movement by suitable studs or pins 61 engaging arcuate slots 62 therein, and provided With camslots 63-63 engaging pins 6il 64: carried by the respective slidahle diaphragm members oi the pair controlled by the respective cam lates. Thus, referring to Fig. 7, it will he arent that plate is rocked back and uitliin the range of movement allowed 1 1e slot 62-, the cam slot 63 and pins 6% 7 ll cause the two diaphragm shutters 57 to secede from or approach each other, like provision being made for the movement of diaphragm members he other pair of kindred disposition of the operating arts. The two cam plates 60 and 60 have r arms 65 and 65"exteuding therefrom ouo i peripheral slots in the casing 55,

t ie adjustment controllingdevices here- 1 described are connected with these & QS- I Also I prefer that there be detachahly as; scciatcd with the diaphragm structure a cenr g tinder, in the form of a cross 66 made lot impervious metal strips turned edgewise to the orifice 53, such cross being mounted so that its center corresponds With the center oi the diaphragm opening. For suit hl mounting the finder cross, as shown Fi screws or pins 68 are secured in the ill of the tube casing, the transverse iic linib of the cross'has its ends deflected to form a vertical fiat niece 69, and these are notched to engage the pins. When the X- frame, or laterally with the second frame,- until the black spot of shadow thrown by the center of the cross upon the screen has followed the outlines of the heart or other organ. An adequate series of'points may thus be plotted by connecting which the outline" of the heart may accurately be drawn, for this movement of the tube to make the black shadow spot of the cross register always with the margin of the heart outline insures that the d agram has been procured by the pro ection of parallel, rather than divergent, rays.

In the employment of the X-ray' tube 70,

it isusually desirable to utilize some reguj ustment of the apparatus normally requisite while the tube is in operation, may be effected by the operator from a single control point, while the operator is standing in a osition protected from the influence of the -ray, and if desired, is working with one hand only. v

To theseends I mount upon the tube casing, to move therewith, a control stand 80. This control stand is shown as a tripod frame, the limbs 81, 82 and 83 of which are connected with the tube casing 28, such frame carrying suitable handles or levers by which the frame and consequently the tube casing may be bodily moved to any position of adjustment, and by which the diaphragm opening may be regulated as to either dimension. Specifically 85 indicates a bracket carried by the tripod and suitably secured thereto affording adequate bearing for the concentric shafts 86 and '87 that respectively carry the handle or levers 88 and 89 in convenient position to one side of and in front of the back frame, so that such handles or their shafts may be conveniently grasped by the operator to move the tube casing in desired adjusted position.

The two shafts 86 and 87 are suitably connected as by cranks 90-90 and pivoted le-' vers 9191 bearing pins..92:92?, with apt-Q propriate slots made in the arms 65 of the diaphragm slide controlling annuli, the connections being preferably such that as both shafts are similarly rocked by movement of both handles 88 and 89 in unison, the two pairs of diaphragm shutters move accordantly toward open or closed position.

Also the control stand is preferably pro vided with a pull knob 9% connected with the control cord 76 for the tube regulator.

It will be apparent that the operator standing beside the platform.16 may, with his left hand, control all of the instrumentalities necessary for varying the adjustment of the diaphragm or the position of the tube frame, or the condition of the tube, without exposing himself to the action of the rays, and leaving his right hand free to work on the patient or make an orthodiagraphic tracing or otherwise.

IVhile I have herein described in some detail a particular embodiment of my invention it will'be apparent to those skilled in the art that numerous changes might be made without departure from the spirit of my invention and within the scope of the appended claims.

Having described my invention, what I claim is:

1. In a roentgenoscope, the combination with the main frame, providing a vertical, impenetrable screen with a penetrable midportion, and a tube carrying casing mounted on saidxframe for vertical and lateral adjustment and provided with an adjustable diaphragm, of a control stand carried by said casing andmoving therewith, said stand projecting laterally beyond the main frame, y

phragm, and a fluoroscopicscreen suspended from the head frame and vertically movable with respect thereto; of a.control stand carried by and movable with the tube casing, extending laterally beyond the main frame, a diaphragm controlling rock shaft carried by the extremity of said control stand and extending forwardly beyond the main frame,

and an operating lever carried by said rock shaft, said lever being accessible to an operbodily to per o adjustment of tie 'ube containing casing and piyotally movtble tor adjustment or the diaphragm openn 3. of a main frame, a second frame transyersel movable thereon a tube casing and fluoroscopic screen both carried by the nain frat re, a second frame transversely movable hereon a tube casing ertically movable in the second frame a duoroscopic screen, means for connecting said screen "for movement in unison with the tube casing, and means for anchoring" said screen against movement.

6. In a roentgenoscope, the combination of a main frame, a second frame transversely movable thereon, a tube casing and a tluorrit sccpio screen both carried by the second frame and Vertically adjustable thereon. and counter-Weights for said casing and fluoroscopic screen indeoendently slidable on the second frame.

Y. In a roentgenoscope, the combination of amain frame a second frame transversely movable thereon, a tube casing and a iluoroscopic screen both carried by the second frame and Vertically adjustable thereon. a counterweight for the fluoroscopic screen a counter-Weight for the casing one said counter-Weights being slidably guided on the second frame and the other counter-weight being slidablyguided on the first counter- Weight and means for interconnecti said counter-Weights for movement in unison.

8. in aroentgenosco oe, tae combination of main frame, a second frame transversely movable thereon tube casing movable iii the second frame at right angles to the direction of second "frame movement, fluoroscopic scree: ard me ns ti 'ibly suspending screen a In roentgenoscope the combination a roentgenoscope, the combination I positions.

10. In a roentgenoscope, a main frame; a

second frame movably supported thereon;

tube casing mounted on said second frame; a diaphragm on said tube casing containing a plurality of independently operable shutter elements; means for counterbalancing said tube casing; a guide-Way; a fluorescent screen mounted on said guide-Way and adjustable thereon; means for counterbalancing so son; a control stand'carried by said'tube casing and means on said control stand for operating said shutter elements.

11. in a. roentgenoscope, a main frame; a second frame movably supported thereon; a tube casing mounted on said second frame; a diaphragm on said tube casing containing a plurality of independently operable shutter elements; means for counterbalancing said tube casing; a guide-Way; a fluorescent screen mounted on said guide-Way and ad justable thereon; means for counterbalano ing said screen; a control stand carried by said tube casing andarranged to serve as means for moving said tube casing and means on said control stand for independently operating said shutter elements.

12. in a roentgenoscope, a main frame; a second frame moyably supported thereon; a tube casing mounted on said second frame;

diaphragm on said tube casing containing a golurality of independently operable shutter elements; means for counterbalancing said tube casing; a guideway; a fluorescent screen mounted on said guide-Way and adjustable thereon; means for counterbalancing' said screen; a control stand carried by said tube casing and arranged to serve as means for moving said tube casing inde pendently of said screen and means on said control stand for independently operating said shutter elements.

In testimony whereof I hereunto set my nand in the presenceoi two subscribing Wit- .EODORE tioCLlNT CK.

Coon,

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